I've tested my bandwidth. Seems fine. I've tried pinging the marketplace and search, it turns out fine and successful too. I've checked in to e*****up following the blog's tip and user numbers seem to be on a steady curve of up and down. And yet, no possible access to any of SL''s related direct sites (not even Secondlife's main site. Weird, right?) except this forum and gridstatus.
As for viewer wise, the problem is not to just trying to login, but even at the home screen for logging in, it shows a timeout error covering most of the screen, unable to show any destinations and SL grid news. Logging in would be fruitless with such too.
I had however tried accessing marketplace through a proxy site. Surprisingly, it works (however predictably some interactive elements are disabled while in a proxy site). The same thing happened when I try to use a different browser's built in VPN to open SL marketplace and Search website - a confusing success. I have a suspicion there's something on my end on this, but I don't know what, as other websites and applications not related to SL works fine and connects quickly. Online surfing for answers suggest that either DNS issues (ISP messing up or bad cache), or, God forbid, SL is being blocked by my ISP (could've been.... that'd be gravely) or country's government (which would be stupid, but they did tried that stunt before on a major site everyone needed and it costed them...), or a very rare case issue.